Piperide trienamide

Piperovatine (21) is a crystalline isobutylamide first isolated from the leaves [24], roots and stems [25] of the shrub Ottonia vahlii (syn Piper ovatum) native to the West Indies and from Piper callosum [26], and exibits mild insecticidal and local anaesthetic activity [27]. The piperide trienamide (22) and the dienamide (9) have been isolated from Otanthus maritima [28]. 

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